from transformers.modeling_rope_utils import rope_config_validation
from transformers.configuration_utils import PretrainedConfig,layer_type_validation
from transformers.utils import logging

logger = logging.get_logger(__name__)


class AiLabConfig(PretrainedConfig):
    model_type = "ai_lab"

    keys_to_ignore_at_inference = ["past_key_values"]

    # Default tensor parallel plan for base model `Qwen3`
    base_model_tp_plan = {
        "layers.*.self_attn.q_proj": "colwise",
        "layers.*.self_attn.k_proj": "colwise",
        "layers.*.self_attn.v_proj": "colwise",
        "layers.*.self_attn.o_proj": "rowwise",
        "layers.*.mlp.gate_proj": "colwise",
        "layers.*.mlp.up_proj": "colwise",
        "layers.*.mlp.down_proj": "rowwise",
    }
    base_model_pp_plan = {
        "embed_tokens": (["input_ids"], ["inputs_embeds"]),
        "layers": (["hidden_states", "attention_mask"], ["hidden_states"]),
        "norm": (["hidden_states"], ["hidden_states"]),
    }

    def __init__(
            self,
            vocab_size=151936,
            hidden_size=1024,   #
            intermediate_size=3072, # 一般取值 4-5倍 hidden_size
            num_hidden_layers=28, # 注模型的层数，一层计算一轮，可以理解多轮多注意力计算
            num_attention_heads=16, #  query 的层数  num_attention_heads 和 num_key_value_heads 成倍数关系 且要求 num_attention_heads // num_key_value_heads
            num_key_value_heads=8, #  key\value 的层数
            head_dim=128,
            hidden_act="silu",
            max_position_embeddings=40960,
            initializer_range=0.02,
            rms_norm_eps=1e-6,
            use_cache=True,
            tie_word_embeddings=False,
            rope_theta=10000.0,
            rope_scaling=None,
            attention_bias=False,
            mlp_bias=False,
            use_sliding_window=False,
            sliding_window=1024,
            max_window_layers=4,
            layer_types=None,
            attention_dropout=0.0,
            **kwargs,
    ):
        self.vocab_size = vocab_size
        self.max_position_embeddings = max_position_embeddings
        self.hidden_size = hidden_size
        self.intermediate_size = intermediate_size
        self.num_hidden_layers = num_hidden_layers
        self.num_attention_heads = num_attention_heads
        self.use_sliding_window = use_sliding_window
        self.sliding_window = sliding_window if self.use_sliding_window else None
        self.max_window_layers = max_window_layers

        # for backward compatibility
        if num_key_value_heads is None:
            num_key_value_heads = num_attention_heads

        self.num_key_value_heads = num_key_value_heads
        self.head_dim = head_dim
        self.hidden_act = hidden_act
        self.initializer_range = initializer_range
        self.rms_norm_eps = rms_norm_eps
        self.use_cache = use_cache
        self.rope_theta = rope_theta
        self.rope_scaling = rope_scaling
        self.attention_bias = attention_bias
        self.mlp_bias=mlp_bias
        self.attention_dropout = attention_dropout
        # Validate the correctness of rotary position embeddings parameters
        # BC: if there is a 'type' field, move it to 'rope_type'.
        if self.rope_scaling is not None and "type" in self.rope_scaling:
            self.rope_scaling["rope_type"] = self.rope_scaling["type"]
        rope_config_validation(self)

        self.layer_types = layer_types
        if self.layer_types is None:
            self.layer_types = [
                "sliding_attention"
                if self.sliding_window is not None and i >= self.max_window_layers
                else "full_attention"
                for i in range(self.num_hidden_layers)
            ]
        layer_type_validation(self.layer_types)

        super().__init__(
            tie_word_embeddings=tie_word_embeddings,
            **kwargs,
        )


__all__ = ["AiLabConfig"]
